Pratardana-vidyâ in the Kaushîtaki-brâhmana states that 'Pratardana, the son of Divodâsa, came, by fighting and strength, to the beloved abode of Indra.' Being asked by Indra to choose a boon he requests the God to bestow on him that boon which he himself considers most beneficial to man; whereupon Indra says, 'I am prâna (breath), the intelligent Self, meditate on me as Life, as Immortality.'